07
Morning: the water and a look
Change the water and wash the bowl. Do not measure “how much” a dog in general should drink. Note whether they drink much more or much less than in their own week. Food, at the hour they already know, comes from the instruction you have, not from a standard cup published here.
For a cat, clean the litter box before you leave. A full box changes behavior and no longer shows you whether the problem is the box or something else. Look briefly at the eyes, the walk to the bowl, and the energy with which they enter the room. Thirty seconds, not a medical exam.